Workers use excavators with environmental clamshell buckets mounted on flat, anchored platforms to dredge the river. The PCB-contaminated sediment is emptied onto 35-foot-wide, 195-foot-long floating barges.
Atlantic Richfield Co. has agreed to clean up PCB-contaminated soils and Hudson River sediment in Westchester County in a project New York conservation officials estimate will cost more than $250 million.
The Department of Environmental Conservation says the consent order with ARCO is for the Harbor at Hastings site where its predecessor company, Anaconda Wire & Cable Co., released polychlorinated biphenyls and metals into the soil, groundwater and river sediment from manufacturing operations.
General Electric's dredging of the Hudson River to clean up pollution has continued on pace during the government shutdown: The Environmental Protection Agency says it has been able to oversee the Superfund project despite furloughs.
Crews under the direction of GE this season have removed 520,000 cubic yards of sediment contaminated by PCBs, exceeding the annual goal set by regulators at the EPA.
General Electric has filed a lawsuit against National Grid seeking compensation for a share of costs for the $1 billion-plus Superfund cleanup of contaminated sediment from the upper Hudson River.
In a federal complaint filed Friday, GE says that in 1973 National Grid's predecessor, Niagara Mohawk, removed an 1880s-era dam downstream of GE plants in Hudson Falls and Fort Edward that caused more than 1 million cubic yards of tainted mud and contaminated sediment to wash downstream.
The Hudson River PCB-cleanup project is about halfway through, and both governmental officials as well as environmental advocates provided an update on the Superfund project Wednesday. What has not yet begun is a project to restore the Hudson River’s natural resources, including fish and wildlife, but planning for the restoration is underway.